When the Deepwater Horizon oil rig exploded in April 2010, killing 11 people and exposing the Gulf of Mexico to a leaking well that pumped 5,000 barrels of crude into the water every day, aspiring artist Olivia Bouler didn't just wait for someone else to take action.

The then-10-year-old from Islip, New York wrote a letter to the National Audubon Society, asking if her bird paintings -- including this humming bird -- could help.

This junior environmentalist put her passion toward a good cause -- and her efforts are still paying off.